BEI Kimco Magnetics (Vista, CA) has released the Moving Magnet voice coil actuator series. When combined with smart drive electronics, the actuator can be controlled for speed and desired output force. Moving magnet actuators are designed for applications that require moderate speed and controllable, gentle stop points including remotely controlled circuit breakers, medical hand tools, and other delicate instrumentation. Unlike standard voice coil actuators where the magnet assembly is intended to remain fixed while the coil assembly moves, these actuators are designed to use a stationary coil.
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